EPA 608 TYPE III Correct Questions & Answers!!

A-1 - ANSWER refrigerants CFC-12, HCFC-22, HFC-134a are all classified as type what substances? 15 hg - ANSWER when recovering refrigerant from a medium pressure system with more than 200lbs of refrigerant, recover to a level of? 30% - ANSWER EPA requires that all industrial process refrigeration systems containing more than 50 lbs of refrigerant MUST be repaired when the annual leak rate excceds? pressurize system using controlled hot water - ANSWER whats the most efficient method of leak checking a charged low pressure refrigeration unit? 10 - ANSWER a low pressure chiller used for comfort cooling must be repaired if it has annual leakage of how much %? 18 months - ANSWER how long would you have to retrofit or retire an appliance that has excceded threshold leak rate if it has 50 lbs or more of an exempt refrigerant? condenser top - ANSWER where is the purge unit located in a low pressure system? type 2 - ANSWER to repair a chiller with R-22 the technician must have what type of certification 36 - ANSWER when charging a low pressure system refrigerant should be introduced to system as vapor to raise systems saturation temp to minimum of? ashrae-15 - ANSWER the standard for machine room safety is? purgue unit - ANSWER low pressure chillers operate below atmospheric pressure and therefore require what to work? purge unit - ANSWER removes non-condensables that leak into a low pressure chiller system leaking - ANSWER excessive running of a purge system on a low pressure chiller indicates what? 10 psig - ANSWER when leak testing a low pressure centrifugal chiller with nitrogen the max test pressure is what? condenser, chiller barrel tubes - ANSWER a low pressure refrigeration system could have a leak in which two places if excessive moisture collects in purge unit? gaskets, fittings - ANSWER through where does moisture usually enter low pressure chillers? Above atmospheric pressure - ANSWER to prevent air accumulation in an idle low press